{"id":119753,"date":"2024-09-10T09:43:17","date_gmt":"2024-09-10T07:43:17","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimosti-vo-freebsd-pozvolyayushhie-povysit-svoi-privilegii-ili-obojti-izolyacziyu-gostevoj-sistemy"},"modified":"2024-09-10T09:43:17","modified_gmt":"2024-09-10T07:43:17","slug":"uyazvimosti-vo-freebsd-pozvolyayushhie-povysit-svoi-privilegii-ili-obojti-izolyacziyu-gostevoj-sistemy","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/uyazvimosti-vo-freebsd-pozvolyayushhie-povysit-svoi-privilegii-ili-obojti-izolyacziyu-gostevoj-sistemy","title":{"rendered":"Vulnerabilidades no FreeBSD que permitem elevar privil\u00e9gios ou contornar a isola\u00e7\u00e3o do sistema convidado","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>No FreeBSD foram corrigidas v\u00e1rias vulnerabilidades que permitem a um usu\u00e1rio local elevar suas permiss\u00f5es, executar c\u00f3digo no contexto do n\u00facleo ou escapar de um ambiente isolado:  <\/p>\n<ul>\n<li class=\"l\"> CVE-2024-43102 \u2014 uma condi\u00e7\u00e3o de corrida na implementa\u00e7\u00e3o da chamada de sistema _umtx_op pode ser explorada para acessar uma \u00e1rea de mem\u00f3ria j\u00e1 liberada (Use-After-Free) atrav\u00e9s do envio simult\u00e2neo de v\u00e1rias solicita\u00e7\u00f5es UMTX_SHM_DESTROY. A vulnerabilidade pode potencialmente contornar as restri\u00e7\u00f5es do mecanismo de isolamento Capsicum ou levar \u00e0 execu\u00e7\u00e3o de c\u00f3digo a n\u00edvel de kernel. A vulnerabilidade recebeu o n\u00edvel mais alto de gravidade (10 de 10). O problema foi resolvido nas atualiza\u00e7\u00f5es 14.1-RELEASE-p4, 14.0-RELEASE-p10 e 13.3-RELEASE-p6.\n<li class=\"l\"> CVE-2024-45287, CVE-2024-45288 \u2014 vulnerabilidades na biblioteca libnv, usada no kernel e no espa\u00e7o do usu\u00e1rio para manipula\u00e7\u00e3o de listas no formato chave\/valor. O primeiro problema est\u00e1 relacionado a um estouro de inteiro, resultando na aloca\u00e7\u00e3o de um buffer menor do que o bloco de dados gravado no buffer. O segundo problema \u00e9 causado pela n\u00e3o adi\u00e7\u00e3o do caractere nulo final no \u00faltimo elemento do array, resultando na possibilidade de grava\u00e7\u00e3o fora do buffer alocado. A vulnerabilidade pode potencialmente ser explorada para elevar privil\u00e9gios ao sobrescrever \u00e1reas de mem\u00f3ria em processos de sistema ou no kernel.\n<li class=\"l\"> CVE-2024-32668, CVE-2024-41928, CVE-2024-8178, CVE-2024-42416, CVE-2024-43110, CVE-2024-45063 \u2014 vulnerabilidades no hipervisor bhyve, permitindo a execu\u00e7\u00e3o de c\u00f3digo em um processo em execu\u00e7\u00e3o na m\u00e1quina host (geralmente com privil\u00e9gios de root), ao manipular dentro do sistema convidado com drivers do controlador USB virtual (XHCI), TPM ou ctl (emula\u00e7\u00e3o SCSI atrav\u00e9s da CAM Target Layer).\n<li class=\"l\"> CVE-2024-6119 \u2014 vulnerabilidade no OpenSSL, levando ao encerramento inesperado de aplicativos ao verificar nomes de certificados X.509 especialmente formatados, definidos no campo otherName.  <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61838\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0445 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u043e\u043c\u0443 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u043f\u043e\u0434\u043d\u044f\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438, \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u0432 \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442\u0435 \u044f\u0434\u0440\u0430 \u0438\u043b\u0438 \u0432\u044b\u0439\u0442\u0438 \u0438\u0437 \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f: CVE-2024-43102 &#8212; \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0433\u043e\u043d\u043a\u0438 \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u043e\u0433\u043e \u0432\u044b\u0437\u043e\u0432\u0430 _umtx_op \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u043a \u0443\u0436\u0435 \u043e\u0441\u0432\u043e\u0431\u043e\u0436\u0434\u0451\u043d\u043d\u043e\u0439 \u043e\u0431\u043b\u0430\u0441\u0442\u0438 \u043f\u0430\u043c\u044f\u0442\u0438 (Use-After-Free) \u0447\u0435\u0440\u0435\u0437 \u043e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0443 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u043f\u043e\u0434\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432 UMTX_SHM_DESTROY. \u041f\u043e\u0442\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043e\u0431\u043e\u0439\u0442\u0438 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 Capsicum [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-119753","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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